Bro, what is the need to do that? They both are almost the same in every way.
The only difference here is that one is a retro classic cruiser style and the other is the cafe racer. Although if you want it to change so badly, I would recommend you to also change the handlebar and reduce its heights. But remember to do it from good customs. One of my friends tried to clean his tank and spray paint it, during that process the customs people made crack and a few dents in the tank. Best of luck.